Question

Please help me out, i came across this script in my project. Is this html array or php array ?

<input type="hidden" name="newsletter['.$var["id"].'][someid]" value="'.$var['id'].'" />

Answer 1

This is a combination between the two. For example, the following:

<input type='text' name='arr[foo]' value='fooValue' />
<input type='text' name='arr[bar]' value='barValue' />

When submitted, this will be read by PHP into an array called arr, looking like this:

$_POST['arr'] (
    'foo' => 'fooValue',
    'bar' => 'barValue'
)

This makes being able to pass arrays to your PHP script a lot easier, either through the generating PHP, or through javascript, or similar.

The specific example you have is using a PHP array to generate some HTML that can then be read as an array in the next PHP script, but HTML itself does nto have the concept of an array.